电能质量问题包括以下几种：电涌、电压闪变、断电、谐波等。
There are several power quality issues such as power surges, voltage sags, outages, harmonics, etc.
针对使用中出现的发热、振动、干扰与谐波等问题提出处理意见。
Aimed at producing heat, vibration, disturbance and harmonic wave, the handling opinions are pointed.
本文分析了目前纺织厂通风机可控硅串级调速四种主电路方案的特点、效率和谐波等情况。
This paper analyses the characteristics, efficiency and harmonic of four kinds of power circuits for SCR-cascade control used in textile mill ventilators.
该装置不但可以对振动、噪声进行监测，还可以根据实际需要对电压、电流、功率、谐波等进行监测。
Not only can this device monitor vibration and noise, but also can monitor voltage, current, power and harmonics according to actual needs.
并通过仿真研究，验证了三相输入信号存在直流偏移、不对称、谐波等干扰情况下，仿真结果与理论推导一致。
The theoretical conclusions are confirmed by detailed simulations under the situations, such as offsetting, unbalance, harmonic, phase-abrupt and frequency-abrupt.
本文以TMS320F 2806DSP为核心处理器，主要针对电网中的电压、谐波等参数进行实时监测以及统计记录，自主研发了一款新型电网电压监测仪表。
Using TMS320F2806 DSP as its core processor, a new voltage monitor is introduced, which monitors as well as records the parameters of voltage quality such as voltage, harmonic and so on.
第一部分讨论各种谐波问题，如使供电电压畸变，降低功率因数，增加能量损耗，干扰通讯系统等。
The harmonic problems, such as distorting supply voltage, decreasing power factor, increasing energy loss, interfering with communication systems etc. are discussed in the part one.
晶闸管串级调速系统是一种廉价、简易的调速系统，但是传统串调系统存在着诸如功率因数低、谐波污染严重等弊端。
Speed regulation system using cascade control method with thyristor is a low-cost system, but the classic system has some shortages, such as low power factor, serious harmonic pollution and etc.
这种方法首先对非语言声音信号进行谐波分析，然后对所得到的时变振幅与频率等声音信号参数进行分段线性化。
This technique performs harmonic analysis of the nonspeech audio signals and then the resulted attributes including time-varying amplitude and frequency functions are piecewisely linearized.
可编程控制器在高于24V的直流电压等级控制回路中应用时需解决输入模块的电压变换和谐波干扰等问题。
In the application of above 24V fort current voltage grade control circuit, Voltage Alternating and resonant wave interference of input model for Programmable Logic Controllers must be resolved.
数值计算得到了转子系统在特定参数范围内的分叉图，系统存在亚谐波、概周期和混沌等非协调运动。
The diagrams of bifurcation, sub-harmonic, quasi-periodic and chaotic motion with typical parameters are numerically created.
机器人采用了关节式类人结构，在机构上使用了谐波减速器和蜗轮蜗杆等装置使机器人的结构更加精巧。
This Robot is a joint-Robot like a man and USES worm and worm wheel and harmonic gear retarder in its machine which makes the structure of Robot more refinement.
最后讨论了抗干扰措施、谐波修正等问题。
The anti disturbance measure and harmonic modification are also discussed.
有理数谐波锁模技术是产生高速超短脉冲的重要技术之一，其光时分复用通信技术等领域中有重要的应用价值。
The rational harmonic mode-locking has become a research subject of intense interest due to its application on the generation of ultra- high repetition frequency optical pulse train.
文中分析了电力系统中谐波的来源及其产生的影响与危害，并总结了相应的消除对策和抑制的方法措施等。
The paper analyzes the sources and impact and hazard of power system's harmonic and summarizes the corresponding eliminating solutions and restraining measures.
这种等效电路通常是由谐波电源和无源元件组成，这一等效电路产生的功率现象要比线性电路复杂得多。
It is usually composed of passive elements and harmonic sources which make the power phenomena in such a circuit much more complex than that in a linear circuit.
分析了电路波形及实验数据、对实验研究过程中的多频率峰值、谐波干扰和幅值干扰等进行了分析和处理。
A detailed analysis about the circuit waveform and experimental data is also given the multi-frequency peak value and the frequency interference during the experiment are all analysed and processed.
其运行特性以及可能存在的电力谐波、系统稳定性等一系列问题是人们广泛关注的课题。
Its operation characteristics and possible problems, such as power harmonic and system stability, are widely studied in the whole world.
晶闸管串级调速系统是一种廉价、简易的调速系统，但是传统串调系统存在着诸如功率因数低、谐波污染严重等弊端。
Thyristor cascade control system is a low-cost system, but the traditional cascade control system has some shortages, such as a low power factor, serious harmonic pollution etc.
深入细致地分析了谐波、间歇电弧、电流互感器、负荷、过渡电阻等多个因素对故障选线结果的影响，为方案的实用化奠定了基础。
The influences of several factors such as harmonics, intermittent arc grounding, ct, load and fault resistance have been thoroughly analyzed, therefore, it is fundamental work for its application.
该方法不受零序电流大小、线路补偿情况、谐波强弱等影响，具有较高的理论和实用价值。
The method is independent of zero-sequence current's value, inductance compensation situation and harmonics components, so it is effective and robust.
电力线路的电流、电压谐波效应可以引起自同步拖动、计算机、电话等异常运行。
The current or voltage harmonic wave in power lines may cause abnormalities in self synchronization drive, computer, telephone, etc.
并运用大量仿真，对本方法在谐波、电压波动等干扰环境下基本频率估计的有效性进行验证。
Finally, the fundamental frequency estimation under different PQ disturbances condition, such as harmonics, voltage fluctuations, etc, is analyzed by simulation respectively.
实验表明，作为双馈感应发电机转子励磁电源的三相pwm变换器具有功率因数高、网侧电流谐波小、能量双向流等优点。
Experimental results show that three-phase PWM converters are advantageous in high power factor, small input-line current harmonic distortion and bi-directional power flow.
电力系统中网络结点千百个交织密布，有功潮流、无功潮流、高次谐波、负序电流等以光速在全系统范围传播。
Power system Network Node thousands of mixed clouds, active power, reactive power flow, high harmonics, negative sequence current of the speed of light in the system-wide communication.
基于电压源逆变器（V S I）的静止无功发生器（SVG）直接应用PWM控制技术，具有结构紧凑、易于控制、谐波含量小以及功率密度大等优点。
VSI-based SVG using PWM technology has some advantages such as compact structure, simple control, little harmonics and high power density.
文中还讨论了太阳电池发电系统最佳功率流控制的实现方法以及补偿无功功率和谐波失真等问题。
The actualization of optimal power flow control of solar cell power system and the compensation of reactive power, harmonic distortion are discussed.
电网中存在谐波、无功、电压闪变及负序电流等问题，严重影响电能质量，危害电力设备。
Harmonics, reactive power, voltage flicker and negative-sequence current of power grids can affect the power quality and harm the power equipment badly.
通过研究，系统解决了大容量干式励磁变压器参数优化、谐波含量及谐波损耗计算等技术难题。
Through this research, a series of difficult technical problems on parameter optimization and on calculation of the content and loss of harmonic waves, etc. have been solved.
通过研究，系统解决了大容量干式励磁变压器参数优化、谐波含量及谐波损耗计算等技术难题。
Through this research, a series of difficult technical problems on parameter optimization and on calculation of the content and loss of harmonic waves, etc. have been solved.
应用推荐